Аннотация:http://www.astronomerstelegram.org/?read=10667
MASTER-Kislovodsk auto-detection system discovered possible SN in NGC2748 at (RA, Dec) = 09h 13m 44.37s +76d 28m 42.4s on 2017-08-19.96322 UT.
This PSN is in 3" from the center of NGC2748 galaxy.
The OT unfiltered magnitude is 15.6m (limit 19.1m).
The OT is seen in 4 images. There is no minor planet at this place.
We have reference image without OT on 2017-04-20.81088 UT with unfiltered magnitude limit 19.5m.
Spectral observations are required.
The discovery and reference images are available at: http://master.sai.msu.ru/static/OT/091344.71762842.5.png